[sdiy] Bit Crunch

harry bissell harrybissell at prodigy.net
Thu May 11 04:49:28 CEST 2006


Undersampling just gives alias tones... with a fixed (even if variable) 
clock you will get more
frequency shift or ring-modulator sounds.

I'd do what you planned (A/D - D/A) but with the ability to kill lower 
order bits selectively.

Maybe an 8 bit input, but only a four bit output.

If you want to buy something off the shelf that does exactly this...the 
Blacet/ Wiard MiniWave
is the ticket.  You can make EPROM banks that map 8 bit data to 
arbitrary output waveforms.

H^) harry

Kyle Stephens wrote:
> Heylo...
>
> I'm trying to cook up some bit crunch distrortion by
> way of intentionally sampling an anlog input at a low
> fequency.
>
> Is this as simple (eh, understatement...) as wiring an
> ACD chip to a DAC chip, with the sample rate for the
> ADC turned down low?
> I'd ideally like a variable sample rate if possible.
>
>
> And a belated thank you to everyone who helped me find
> me 5 Band EQ-in-a-chip!
>
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